phy: phy-rockchip-samsung-hdptx: Select CONFIG_RATIONAL

Ensure CONFIG_RATIONAL is selected in order to fix the following link
error with some kernel configurations:

drivers/phy/rockchip/phy-rockchip-samsung-hdptx.o: in function `rk_hdptx_ropll_tmds_cmn_config':
phy-rockchip-samsung-hdptx.c:(.text+0x950): undefined reference to `rational_best_approximation'

Fixes: 553be2830c5f ("phy: rockchip: Add Samsung HDMI/eDP Combo PHY driver")
Reported-by: kernel test robot <[email protected]>
Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
Signed-off-by: Cristian Ciocaltea <[email protected]>
Reviewed-by: Heiko Stuebner <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

diff --git a/drivers/phy/rockchip/Kconfig b/drivers/phy/rockchip/Kconfig
index a34f67bb7e61ad7b23cfc2d510054bb4348b8a36..b60a4b60451e5c1cda026c1565e87e5c5c7f86fe 100644 (file)
--- a/drivers/phy/rockchip/Kconfig
+++ b/drivers/phy/rockchip/Kconfig
@@ -87,6 +87,7 @@ config PHY_ROCKCHIP_SAMSUNG_HDPTX
        tristate "Rockchip Samsung HDMI/eDP Combo PHY driver"
        depends on (ARCH_ROCKCHIP || COMPILE_TEST) && OF
        select GENERIC_PHY
+       select RATIONAL
        help
          Enable this to support the Rockchip HDMI/eDP Combo PHY
          with Samsung IP block.